No problem, we've got 81349138 and 39919885 to multiply
81349138 × 39919885 = 39919885 × (81349138)
+ 39919885 × 8 which equals 319359080
+ 39919885 × 30 that is equal 1197596550
+ 39919885 × 100 what gives us 3991988500
+ 39919885 × 9000 that equals 359278965000
+ 39919885 × 40000 what gives us 1596795400000
+ 39919885 × 300000 resulting in 11975965500000
+ 39919885 × 1000000 that equals 39919885000000
+ 39919885 × 80000000 giving us 3193590800000000

= 3247448233809130
